Eyeglass-mounting



D. F. GREEN.

EYEGLASS MOUNTING.

APPLICATION men MAY 9, 191a.

\ Patented Mar. 23, 19;

IN VEN TOR.

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A TTORNEYS.

DALLAS F. GREEN, OF FORT WAYNE, INDIANA.

EYEGLASS-MOUNTING.

Specification of Letters Patent. Patented Dial. 23, 1920.

Application filed May E), 1918. Serial No. 23SA80,

To ollwhome't may concern:

lie it known that I, DALLAS F. GREEN, a citizen of the United States, residing at Fort Wayne, in the county of. Allen and State of, Indiana, have invented new and useful Improvements in Eyeglass-hlountings, of which the following is a specification.

The invention relates to eye glass mountings and particularly to improvements in the type of such mountings known to the trade as finger-piece and Oxford mountings. The object of the invention is to produce a stable and durable mounting in which the mechanical parts are so placed as to be concealed when on the wearers face and also entirely out of the line or field of vision of the wearers eyes. Another object is to shorten up the bridge arch and at the same time keep the bearings entirely free of contact with the nose of the wearer. Another object is to obtain a movement of the nose guardsin an are parallel to the plane of the lenses and another object is to provide a novel form of bearing for the movable parts which shall add stability and wearing qualities to the mounting and prevent unnecessary side action or wabbling in those parts.

In the accompanying drawings I illus trate an embodiment of the invention in which Figure 1 is a rear elevational view of a pair of eye-glasses provided withmy im provement; Fig. 2-, a plan view of the same; Fig. 3 an enlarged side elevational view of the mounting, the bridge being. omitted; Fig. t an end view of the same; Fig. 5 a side elevational view of the lens strap; Fig. 6 an end view of the same and Fig. 7 a rear elevational view of a modified form of the invention.

In the Oxford type of lens mountings they are secured to the lenses at a Joint on the peripheral edge thereof above he middle point of the inner edge of the lens so that the brid e in said type has been heretofore of a considerable length relatively to the bridges of other types of mountings.

Referring to the drawings, the mounting consists of the bridge 10, secured at its opposite ends to straps 11. The straps and the parts secured thereto and operative there iipon-are identical in construction, hence I shall describe but one of them. The strap is preferably stamped out of a single piece of material and consists of two oppositely extending prongs 12 adapted to engage the periphery of the lens 13 and two depending ears 1% which are engaged to opposite faces of the lens by screw 15 which is passed through apertures in the ears and the lens.

A bearing 16. is secured to the rear face of the rear ear 1d and projects rearwardly therefrom. The bearing is centrally apertured to receive the forward end of screw or post 17. A cylinder 18 is engaged on the periphery of the bearing and is revoluble thereon. The rear end of the cylinder is closed by wall 19 and the wall is centrally apertured .to receive screw 17 and upon which screw the cylinder is also revoluble. The head of the screw bears against the rear face of the wall 19 and retains the cylinder 011 both bearings. A coiled spring 20 is within the cylinder, one end thereof being engaged in an aperture 21 formed in bearing 16 and the other end is engaged in an aperture formed in wall 19. Guard arm 22 is secured to the cylinder and its forward end is projected forwardly and laterally to form a finger piece 23 which is above the line of vision of the wearers eye. The portion of the guard arm below the cylinder is relatively long and extends laterally and downwardly from the cylinder so that guard 24- secured to the lower end of the arm shall, in its normal position, lie adjacent the inner edge of the lens and laterally of the vertical plane of the longitudinal axis of the toward each other the guards are separated, springs 20 opposing the movement. Upon releasing the finger pieces the springs restore or tend to restore the guards to normal position. Since the pivots, upon which the guards are mounted, project at right angles to the plane of the lenses, the movement of each guard is in the arc of a circle and in a plane parallel to the plane of the lens and the gripping action of the guard is in an upward direction as it meets the side of the nose of the wearer. The spring causes the guard to grip the side of the nose firmly and its inner edge as in other forms of mountsince the guard is beyond its pivotal point relatively to the edge of the lens the weight of the lens tends to increase the ripping power ofthe guard since the lens btrap is secured to the upper periphery of the lens rather than at approximately the middle of ings; that is, types other thanthe Oxford.

It is apparent that the heavier the lens the greater will be itseifect on the guard.

- By'constructing and arranging the pivotal points of the guards 'as above described 1 I am enabled to. use a much shorter'bridge than heretofore in mountings of the Oxford type. r I

Imay use my mounting on rims'as well as on rimless glasses.

. In Fig. 7 Iillustrate the application of the invention in modified form in which I secure the ends of the bridge to the cylinders which are identical in construction to cylinders 18 and are mounted on the lens straps 26 in the manner above described. The guards 27 arethen secured to the lens straps, the arms 28 thereof depending from the straps andohaving their lower ends bent rearwardly and connected to the guards so that the guards shall be in the qsamepositionrelatively to the cylinders 25 as guards 24 areto cylinders 18. Finger pieces 29 may be secured .to' the lens straps or they may be 5 omittedl. In this adaptation the lenses will be rocked" upwardly on the pivots, the

springs, within the cylinders 25 opposing the movement as before. fThe guards 27, being secured to the lens straps, therefore move in "arcs identical with the arcs in which guards -24 move and the same lateral and upward movement of the guards for gripping the sides of the nose, of. theweareris obtained upon releasing the lenses as is obtained in the previously described adaptation of the invention. In both illustrations the grip of the guards is much firmer than in mountings where the movement of the guards is such that they merely impinge upon the sides of the noseof the wearer.

What I claim is:

1. In a lens mounting, a strap adapted to be secured to the peripheral edge of a lens,50

strap, the guard is moved in the are of a circle.

2. In a lens mounting, a strap adapted to be secured to the peripheral edge of a lens,

a bearing formed on the rear side of the plane of the lens, a cylinder revolubly 'mounted at its opposite ends on the bearing and post and a guard connected to the cyhnder and dependlng therefrom and 111 its normal position being in a vertical )lane beyond the vertical plane of the longitudi- -nal axis of the cylinder, and means within the cylinder tending to retain the guard in said normal position. I

3. In a lens mounting, a strap adapted to I be secured to the peripheral edge of a lens,

a bearing formed on the rear side of the strap, a post connected to the bearing andprojecting rearwardly therefrom and at right angles to the vertical plane of the lens, a cylinder having its rear end closed and apertured to revolubly engage the post and having its forward end revolubly engaged .on the bearing, a spring within the cylinder connected at one end to the bearing and at its other end to the cylinder, a bridge connected at one end to the strap, and a guard connected to the cylinder which, in its normal position is below and beyond the cylinder.

In witness whereof I have hereunto subscribed my name this 29th day of April,

DALLAS F. GREEN.

strap, a post projecting rearwardly from the bear ng and at right angles to the vertical 

